Description

Improper neutralization of special elements used in a command ('command injection') in Windows Active Directory allows an unauthorized attacker to execute code over a network.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.8",
  "pubDate": "2026-08-11T17:18:02.287Z",
  "pubdate": "2026-08-11T17:18:02.287Z",
  "executiveSummary": "This vulnerability involves an improper neutralization of special elements used in a command, commonly classified as command injection, affecting Windows Active Directory. The flaw permits an unauthorized remote attacker to execute arbitrary code over a network without requiring prior authentication or user interaction.\nThe primary impact of successful exploitation includes complete system compromise, unauthorized execution of administrative commands, and potential lateral movement across the enterprise network. Given that Windows Active Directory often serves as the core identity and access management repository for an organization, an untrusted remote code execution vulnerability introduces catastrophic risk implications, potentially leading to total domain takeover.\nAttack capabilities encompass arbitrary operating system command execution within the context of the vulnerable service or underlying operating system component handling Active Directory operations. Exploitation requirements necessitate network accessibility to the vulnerable Windows Active Directory interface, where specially crafted inputs containing malicious command sequences fail proper sanitization and are subsequently passed to the underlying command interpreter or operating system shell.\nDefenders must prioritize identifying affected systems and applying relevant vendor-supplied security updates or configuration workarounds to disrupt the attack vector and mitigate systemic exposure.",
  "technicalDetails": "The root cause of the vulnerability stems from insufficient input validation and improper sanitization of special characters within parameters processed by Windows Active Directory components. When untrusted input containing command separators or shell metacharacters is accepted by the vulnerable component, the application fails to neutralize these elements effectively before passing them to downstream execution sinks.\nThe vulnerable component resides within the command-processing or parameter-handling logic of Windows Active Directory interfaces exposed over the network. Network exposure is a critical factor, as the vulnerability is exploitable remotely over standard network protocols utilized by Active Directory services, bypassing the need for local access.\nThe authentication requirement for this vulnerability is absent, meaning an unauthorized attacker can interact directly with the exposed service. Furthermore, minimum privilege requirements are non-existent for the initial access vector, allowing anonymous or unauthenticated sessions to deliver the malicious payload.\nThe step-by-step attack flow proceeds as follows: First, the attacker identifies a vulnerable network endpoint exposed by Windows Active Directory that accepts user-supplied parameters without rigorous input validation. Second, the attacker crafts a malicious payload incorporating command injection sequences, such as shell operators (e.g., ampersands, semicolons, or pipe characters), appended to legitimate or structurally required protocol fields. Third, the network service ingests the unsanitized input and improperly forwards the concatenated string to an underlying operating system shell or command execution function.\nFourth, the command interpreter parses the injected special elements, terminating the intended context and executing the attacker's arbitrary payload with the privileges of the hosting service or system account. Payload behavior can range from executing native operating system binaries, deploying secondary stagers, establishing reverse shells, or executing PowerShell commands to enumerate the environment.\nThe post-exploitation impact includes persistent unauthorized access, privilege escalation within the local operating system domain, extraction of sensitive directory database artifacts such as NTDS.dit hashes, and deployment of advanced persistent threats capable of manipulating directory objects and security descriptors across the entire Active Directory forest."
}